Airworthiness Directive · Amendment 39-17942 · Landing gear
BAE Systems (Operations) Limited Airplanes
This AD applies to all BAE Systems (Operations) Limited Model BAe 146-100A, -200A, and -300A airplanes; and Model Avro 146-RJ70A, 146-RJ85A, and 146-RJ100A airplanes; certificated in any category; all models, all serial numbers.
We are adopting a new airworthiness directive (AD) for all BAE Systems (Operations) Limited Model BAe 146 series airplanes and Model Avro 146-RJ series airplanes. This AD was prompted by reports of cracking of the main fitting of the nose landing gear (NLG). This AD requires revising the maintenance program by incorporating a new safe- life limitation for the NLG main fitting. We are issuing this AD to prevent collapse of the NLG, which could lead to degradation of direction control on the ground or an un-commanded turn to the left, and a consequent loss of control of the airplane on the ground, possibly resulting in damage to the airplane and injury to occupants.
Within 30 days after the effective date of this AD: Revise the maintenance or inspection program to incorporate a new safe-life limitation of the NLG main fitting, as specified by Subject 05-10-15, Aircraft Equipment Airworthiness Limitations, of Section 05-10, Time Limits, of Chapter 05, Time Limits/Maintenance Checks, of the BAE Systems (Operations) Limited BAe 146 Series/Avro 146-RJ Series Aircraft Maintenance Manual, Revision 108, dated September 14, 2012. Comply with all applicable instructions and airworthiness limitations included in Subject 05-10-15, Aircraft Equipment Airworthiness Limitations, of Section 05-10, Time Limits, of Chapter 05, Time Limits/Maintenance Checks, of the BAE Systems (Operations) Limited BAe 146 Series/Avro 146-RJ Series Aircraft Maintenance Manual, Revision 108, dated September 14, 2012. The initial compliance times for doing the actions is at the applicable times specified in Subject 05-10-15, Aircraft Equipment Airworthiness Limitations, of Section 05-10, Time Limits, of Chapter 05, Time Limits/Maintenance Checks, of the BAE Systems (Operations) Limited BAe 146 Series/Avro 146-RJ Series Aircraft Maintenance Manual, Revision 108, dated September 14, 2012, or within 30 days after the effective date of this AD, whichever is later.
After accomplishing the revision required by paragraph (g) of this AD, no alternative actions (e.g., inspections), intervals, or CDCCLs may be used unless the actions, intervals, or CDCCLs are approved as an alternative method of compliance (AMOC) in accordance with the procedures specified in paragraph (j)(1) of this AD.
As of the effective date of this AD, no person may install an NLG main fitting, having a part number identified in paragraph 1.A., Tables 1., 2., and 3. of BAE Systems (Operations) Limited Inspection Service Bulletin ISB.32-186, dated April 12, 2012, unless in compliance with the requirements of this AD.
